J-Spring 201821 Videos

J-Spring 2018 aftermovie

J-Spring 2018 took place on the 31st of May at TivoliVredenburg, Utrecht. The NLJUG looks back on a very successful event with enthusiastic and constructive responses from the community! With over 500 visitors, 18 speakers including 8 Java Champions (!) and great quality content, it was a great day. Thanks to everyone who joined us […]

J-Spring 2018: Martijn Verburg – The Diabolical Developer’s Guide to Performance Tuning

The Diabolical Developer shows you the steps to take when you get that call at 0300 saying that your Java / JVM application is too slow. He introduces the Performance Diagnostic Methodology (PDM) which focuses on how to quickly hone into the root cause of a bottleneck and what steps you can take to fix […]

J-Spring 2018: Opening by Bert Jan Schrijver

Bert Jan Schrijver introduces the best Spring Java event of the Netherlands. Bio Bert Jan: Bert Jan is a software craftsman at JPoint and CTO at OpenValue. He focuses on Java, Continuous Delivery and DevOps. Bert Jan is a Java Champion, Developer Champion, JavaOne Rock Star speaker and leads NLJUG, the Dutch Java User Group. […]

J-Spring 2018: Emond Papegaaij – Hyperledger Fabric and Java

Blockchain is the hype of the moment. Seemingly everything gets better with blockchain and company values skyrocket when including blockchain in their name. Although many of these stories may have to be taken with a grain of salt, blockchain technology itself is a very interesting development. To find out more about the possibilities, we decided […]

J-Spring 2018: Daan Keuper – Hacking the connected car

Car security is, not surprisingly, a hot topic; after all they are fast and heavy computer controlled machinery that nowadays come with all kinds of internet connectivity. So we decided to have a look at it. In this presentation, we’ll first cover some theory behind the IT-part of car architecture. We’ll discuss attack vectors and […]

J-Spring 2018: Bert Ertman – Thinking about my doorbell

When the White Stripes wrote their song ‘My Doorbell’ back in 2005, they had no idea it was actually about this very presentation and MY doorbell. “Yeah, I’m thinking about my doorbell, when ya gonna ring it, when ya gonna ring it” And then what?! Well…then I want to ask it who is in front […]

J-Spring 2018: Roy van Rijn – Fostering an evolving architecture in the agile world

What is software architecture? Is it the decision to adopt microservices? Is it the document that describes the layers in your Java EE application? No, every line of code you commit is part of your evolving architecture. During this talk I’ll explain how we, at the Port of Rotterdam, manage our software architecture in an […]

J-Spring 2018: Siren Hofvander – Making cookies healthy. Security in a web based world

Our world has grown more complicated since cookies were first baked into web browsers as a way around state-based obstacles and sessions. In the intervening years they have held everything from unsecured administrative credentials to language preferences and even our window scroll location. But while the wild-west years of plaintext credential storage are hopefully over, […]

J-Spring 2018: Simon Maple – Common vulnerabilities you wish your Java app didn’t have!

This session takes some of the most common vulnerabilities found in the Java eco-system, breaks them down and shows how simple code can exploit them. We’ll look at examples in the wild that have been exposed, some more famously than others, before showing you how to guard against these important security issues. Bio Simon: Simon […]

J-Spring 2018: Ray Tsang – Making Microservices Micro with Istio and Kubernetes

Microservices are here to stay. When applied properly, microservices techniques and culture ultimately help us continuously improve business at a faster pace than traditional architecture. However, microservices architecture itself can be complex to configure. All of a sudden, we are faced with the need for a service discovery server, how do we store service metadata, […]